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1 /* |
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2 * Project Frontplatte |
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3 * |
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4 * comm.c - Handle incoming commands |
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5 * |
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6 * This file is released under the GNU General Public License. Refer |
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7 * to the COPYING file distributed with this package. |
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8 * |
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9 * (c) 2007 Carsten Presser cpresser AT fsing.uni-sb.de |
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10 */ |
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11 |
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12 |
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13 /** I N C L U D E S **********************************************************/ |
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14 #include <p18cxxx.h> |
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15 #include <pwm.h> |
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16 #include "typedefs.h" |
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17 #include "usb.h" |
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18 #include "cdc.h" |
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19 #include "io_cfg.h" |
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20 #include "comm.h" |
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21 #include "user.h" |
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22 |
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23 #include "delay.h" |
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24 #include "t6963.h" |
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25 #include "myi2c.h" |
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26 #include "rc5.h" |
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27 |
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28 |
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29 /** P R I V A T E P R O T O T Y P E S ***************************************/ |
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30 void comm_send_data(unsigned char *data, unsigned char numbytes); |
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31 void comm_send_ack(void); |
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32 void comm_send_nack(void); |
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33 void comm_send_nimp(void); |
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34 |
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35 |
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36 |
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37 /** C O D E ********************************************************/ |
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38 void ProcessInput(void) |
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39 { |
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40 unsigned char len; // command length |
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41 unsigned char input[64]; // input buffer |
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42 unsigned char i; // default counter |
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43 |
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44 |
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45 /* C H E C K I N P U T */ |
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46 //do we have some data ? |
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47 len=getsUSBUSART((char*)&(input[0]), 64); |
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48 |
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49 if (len < CMD_HD_LENGTH) return; |
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50 |
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51 //check if input is valid |
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52 if (input[CMD_HD_SYNC] == CMD_SYNC_SEND) |
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53 |
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54 if ((input[CMD_HD_LENGTH+1] == (len-4)) && (input[CMD_HD_LENGTH] == 0) )// TODO!! |
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55 { |
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56 // looks like we recieved a valid command... |
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57 switch(input[CMD_HD_COMMAND]) |
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58 { |
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59 /* S Y S T E M C O M M A N D S */ |
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60 case CMD_GET_VERSION: |
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61 if (input[CMD_HD_LENGTH+1] != 0) { comm_send_nack(); break;} |
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62 input[0] = FW_VERSION; |
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63 comm_send_data(input, 0x01); |
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64 break; |
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65 |
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66 case CMD_BOOT: |
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67 if (input[CMD_HD_LENGTH+1] != 0) { comm_send_nack(); break;} |
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68 comm_send_ack(); |
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69 // stolen from microchip forum |
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70 INTCONbits.GIE = 0; // shut down global interrupts |
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71 USBSoftDetach(); |
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72 Delay15ms(); |
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73 _asm goto BOOTLOAD_START _endasm; |
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74 break; |
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75 |
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76 /* D I S P L A Y C O M M A N D S */ |
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77 case CMD_DISP_CLEAR_SCREEN: |
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78 if (input[CMD_HD_LENGTH+1] != 0) { comm_send_nack(); break;} |
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79 lcd_ClearScreen(); |
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80 // now send ack |
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81 comm_send_ack(); |
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82 break; |
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83 |
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84 case CMD_DISP_SET_ROW_DATA: |
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85 if (input[CMD_HD_LENGTH+1] < 3) { comm_send_nack(); break;} |
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86 // goto desired address |
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87 lcd_WriteData(input[CMD_DATA_START]); // lower byte |
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88 lcd_WriteData(input[CMD_DATA_START+1]); // upper byte |
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89 lcd_WriteCommand(0x24); |
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90 |
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91 // now write data |
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92 //lcd_SetAutomode(MODE_AUTO); |
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93 for(i = (CMD_DATA_START+2); i<=(len-1); i++) |
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94 { |
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95 //lcd_WriteData(input[i]); |
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96 lcd_WriteByte(input[i]); |
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97 } |
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98 //lcd_SetAutomode(MODE_NOAUTO); |
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99 comm_send_ack(); // now send ack |
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100 break; |
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101 |
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102 case CMD_DISP_SET_ADDRESS: |
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103 if (input[CMD_HD_LENGTH+1] != 2) { comm_send_nack(); break;} |
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104 // goto desired position |
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105 lcd_WriteData(input[CMD_DATA_START]); // lower byte |
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106 lcd_WriteData(input[CMD_DATA_START+1]); // upper byte |
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107 lcd_WriteCommand(0x24); |
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108 // now send ack |
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109 comm_send_ack(); |
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110 break; |
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111 |
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112 /* C L O C K C O M M A N D S */ |
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113 case CMD_READ_CLOCK: |
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114 if (input[CMD_HD_LENGTH+1] != 0) { comm_send_nack(); break;} |
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115 LDPageReadI2C(pcf8583, 0x00, input, 0x10); |
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116 comm_send_data(input, 0x10); |
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117 break; |
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118 |
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119 case CMD_WRITE_CLOCK: |
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120 if (input[CMD_HD_LENGTH+1] != 0x10) { comm_send_nack(); break;} |
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121 LDPageWriteI2C(pcf8583, 0x00, &input[CMD_DATA_START], 0x10); |
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122 comm_send_ack();; |
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123 break; |
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124 |
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125 /* P W M C O M M A N D S */ |
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126 case CMD_SET_PWM1: |
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127 if (input[CMD_HD_LENGTH+1] != 1) { comm_send_nack(); break;} |
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128 SetDCPWM1((int)input[CMD_DATA_START] << 2); |
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129 comm_send_ack(); |
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130 break; |
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131 |
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132 case CMD_SET_PWM2: |
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133 if (input[CMD_HD_LENGTH+1] != 1) { comm_send_nack(); break;} |
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134 SetDCPWM2((int)input[CMD_DATA_START] << 2); |
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135 comm_send_ack(); |
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136 break; |
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137 |
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138 /* M O D E C O M M A N D S */ |
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139 case CMD_SET_MODE_MANAGED: |
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140 if (input[CMD_HD_LENGTH+1] != 0) { comm_send_nack(); break;} |
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141 gg_mode = MODE_MANAGED; |
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142 comm_send_ack(); |
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143 break; |
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144 |
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145 case CMD_SET_MODE_UNMANAGED: |
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146 if (input[CMD_HD_LENGTH+1] != 0) { comm_send_nack(); break;} |
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147 gg_mode = MODE_UNMANAGED; |
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148 comm_send_ack(); |
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149 break; |
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150 |
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151 |
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152 default: |
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153 // not implemented... |
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154 comm_send_nimp(); |
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155 break; |
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156 } |
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157 } |
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158 else |
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159 { |
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160 // input data is somehow invalid |
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161 comm_send_nack(); |
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162 } |
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163 |
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164 |
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165 }//end ProcessInput |
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166 |
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167 |
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168 |
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169 |
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170 |
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171 |
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172 |
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173 |
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174 |
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175 /* S E N D D A T A & R E T U R N C O D E S */ |
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176 void comm_send_data(unsigned char *data, unsigned char numbytes) |
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177 { |
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178 // send a data packet |
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179 unsigned char cmd[64]; |
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180 unsigned char i; |
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181 cmd[CMD_HD_SYNC] = CMD_SYNC_RECV; |
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182 cmd[CMD_HD_COMMAND] = CMD_SYS_ACK; |
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183 cmd[CMD_HD_LENGTH] = 0; |
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184 cmd[CMD_HD_LENGTH+1] = numbytes; |
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185 |
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186 for (i=0; i<numbytes; i++) { |
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187 cmd[CMD_DATA_START + i] = data[i]; |
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188 } |
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189 |
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190 if mUSBUSARTIsTxTrfReady() |
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191 mUSBUSARTTxRam((byte*)&cmd[0],(4+numbytes)); |
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192 } |
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193 |
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194 |
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195 void comm_send_ir(unsigned char address, unsigned char command) |
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196 { |
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197 // send a data packet |
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198 unsigned char ir_cmd[7]; |
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199 ir_cmd[CMD_HD_SYNC] = CMD_SYNC_RECV; |
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200 ir_cmd[CMD_HD_COMMAND] = CMD_SYS_IR; |
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201 ir_cmd[CMD_HD_LENGTH] = 0x00; |
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202 ir_cmd[CMD_HD_LENGTH+1] = 0x02; |
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203 ir_cmd[CMD_DATA_START] = address; |
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204 ir_cmd[CMD_DATA_START+1] = command; |
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205 |
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206 if mUSBUSARTIsTxTrfReady() |
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207 mUSBUSARTTxRam((byte*)&ir_cmd[0],6); |
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208 } |
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209 |
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210 |
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211 void comm_send_ack(void) |
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212 { |
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213 // send a ack-packet |
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214 unsigned char cmd[5]; |
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215 cmd[CMD_HD_SYNC] = CMD_SYNC_RECV; |
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216 cmd[CMD_HD_COMMAND] = CMD_SYS_ACK; |
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217 cmd[CMD_HD_LENGTH] = 0; |
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218 cmd[CMD_HD_LENGTH+1] = 0; |
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219 |
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220 if mUSBUSARTIsTxTrfReady() |
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221 mUSBUSARTTxRam((byte*)&cmd[0],4); |
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222 } |
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223 |
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224 void comm_send_nack(void) |
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225 { |
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226 // send a NOTack-packet |
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227 unsigned char cmd[5]; |
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228 cmd[CMD_HD_SYNC] = CMD_SYNC_RECV; |
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229 cmd[CMD_HD_COMMAND] = CMD_SYS_NACK; |
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230 cmd[CMD_HD_LENGTH] = 0; |
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231 cmd[CMD_HD_LENGTH+1] = 0; |
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232 |
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233 while (!mUSBUSARTIsTxTrfReady()) Nop(); |
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234 mUSBUSARTTxRam((byte*)&cmd[0],4); |
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235 } |
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236 |
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237 void comm_send_nimp(void) |
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238 { |
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239 // send a NOTimplementet-packet |
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240 unsigned char cmd[3]; |
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241 cmd[CMD_HD_SYNC] = CMD_SYNC_RECV; |
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242 cmd[CMD_HD_COMMAND] = CMD_SYS_NIMP; |
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243 cmd[CMD_HD_LENGTH] = 0; |
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244 cmd[CMD_HD_LENGTH+1] = 0; |
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245 |
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246 if mUSBUSARTIsTxTrfReady() |
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247 mUSBUSARTTxRam((byte*)&cmd[0],4); |
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248 } |